Taxes can take a fair share of the retail price. For example, in Germany it's 19% from the price of the game, Finland 22% etc.
The profit in different regions depends also on the current currency exchange rates and the currency used in trading.
One example i can recall, was someone posting a NOE list price that retailers paid for Super Mario Galaxy, that was 35€, and the game retailed for 50€, if i recall.
Ei Kiinasti.
Eikä Japanisti.
Vaan pannaan jalalla koreasti.
Nintendo games sell only on Nintendo system.